Suppose we have the following Treasury bill returns

Question: Suppose we have the following Treasury bill return…

Suppose we have the following Treasury bill returns and inflation rates over an eight year period:

 

Year	Treasury Bills	Inflation
1	11.47%	14.07%
2	12.41	17.11
3	10.08	11.34
4	9.33	8.93
5	9.90	11.34
6	12.28	13.85
7	15.19	18.09
8	17.11	18.07
What was the average real return for Treasury bills over this period?